1-186313690-A-T

Variant names:

• chr1-186313690-A-T
• NM_005807.6:c.4127A>T

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_005807.6(PRG4):​c.4127A>T​(p.Tyr1376Phe) variant causes a missense change. The variant allele was found at a frequency of 0.000000693 in 1,443,702 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. Y1376C) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.9e-7 (0 hom.)
• Consequence: PRG4 NM_005807.6 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 6.71

Genes affected

PRG4 (HGNC:9364): (proteoglycan 4) The protein encoded by this gene is a large proteoglycan that is synthesized by chondrocytes located at the surface of articular cartilage and by some synovial lining cells. This protein contains both chondroitin sulfate and keratan sulfate glycosaminoglycans. It functions as a boundary lubricant at the cartilage surface and contributes to the elastic absorption and energy dissipation of synovial fluid. Mutations in this gene result in camptodactyly-arthropathy-coxa vara-pericarditis syndrome. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Dec 2014]

TPR (HGNC:12017): (translocated promoter region, nuclear basket protein) This gene encodes a large coiled-coil protein that forms intranuclear filaments attached to the inner surface of nuclear pore complexes (NPCs). The protein directly interacts with several components of the NPC. It is required for the nuclear export of mRNAs and some proteins. Oncogenic fusions of the 5' end of this gene with several different kinase genes occur in some neoplasias. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PRG4	NM_005807.6	c.4127A>T	p.Tyr1376Phe	missense_variant	Exon 13 of 13	ENST00000445192.7	NP_005798.3
TPR	NM_003292.3	c.*281T>A		3_prime_UTR_variant	Exon 51 of 51	ENST00000367478.9	NP_003283.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PRG4	ENST00000445192.7	c.4127A>T	p.Tyr1376Phe	missense_variant	Exon 13 of 13	5	NM_005807.6	ENSP00000399679.3
TPR	ENST00000367478	c.*281T>A		3_prime_UTR_variant	Exon 51 of 51	1	NM_003292.3	ENSP00000356448.3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.93e-7 AC: 1 AN: 1443702 Hom.: 0 Cov.: 29 AF XY: 0.00000139 AC XY: 1 AN XY: 719412

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 9.13e-7

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.20
BayesDel_addAF	Benign	-0.016	T
BayesDel_noAF	Benign	-0.26
CADD	Uncertain	24
DANN	Uncertain	0.98
DEOGEN2	Benign	0.31	.;T;.;.
Eigen	Pathogenic	0.71
Eigen_PC	Pathogenic	0.72
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Uncertain	0.90	D;D;D;D
M_CAP	Benign	0.013	T
MetaRNN	Uncertain	0.46	T;T;T;T
MetaSVM	Benign	-0.48	T
MutationAssessor	Uncertain	2.5	.;M;.;.
PrimateAI	Uncertain	0.53	T
PROVEAN	Uncertain	-3.5	.;D;D;D
REVEL	Uncertain	0.32
Sift	Uncertain	0.022	.;D;D;D
Sift4G	Uncertain	0.047	D;D;T;D
Polyphen		0.98, 0.98, 0.99	.;D;D;D
Vest4		0.54
MutPred		0.54		.;Loss of phosphorylation at Y1376 (P = 0.062);.;.;
MVP		0.23
MPC		0.034
ClinPred		0.77	D
GERP RS		6.0
Varity_R		0.090
gMVP		0.59

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.0		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr1-186282822;